It was believed that doing this would increase the length of your stroke as you were moving your hand on a longer pull-pathway under the body than if you pulled straight through.
这样被认为如此做将增加你的划手长度，当你在身体之下有个更长的划程和直划相比。
It was believed that doing this would increase the length of your stroke as you were moving your hand on a longer pull-pathway under the body than if you pulled straight through.
这样被认为如此做将增加你的划手长度，当你在身体之下有个更长的划程和直划相比。
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